Preparation of O-allyl-N-(9-anthracenylmethyl)cinchonidinium bromide as a phase transfer catalyst for the enantioselective alkylation of glycine benzophenone imine tert-butyl ester: (4S)-2-(benzhydrylidenamino)pentanedioic acid, 1-tert-butyl ester-5-methyl ester was written by Corey, E. J.;Noe, Mark C.. And the article was included in Organic Syntheses in 2003.Recommanded Product: (1S,2S,4S,5R)-2-((R)-(Allyloxy)(quinolin-4-yl)methyl)-1-(anthracen-9-ylmethyl)-5-vinylquinuclidin-1-ium bromide This article mentions the following:
The preparation of O-allyl-N-(9-anthracenylmethyl)cinchonidinium bromide (I·Br–), as a phase transfer catalyst for the enantioselective alkylation of glycine benzophenone imine tert-Bu ester, is reported. In the experiment, the researchers used many compounds, for example, (1S,2S,4S,5R)-2-((R)-(Allyloxy)(quinolin-4-yl)methyl)-1-(anthracen-9-ylmethyl)-5-vinylquinuclidin-1-ium bromide (cas: 200132-54-3Recommanded Product: (1S,2S,4S,5R)-2-((R)-(Allyloxy)(quinolin-4-yl)methyl)-1-(anthracen-9-ylmethyl)-5-vinylquinuclidin-1-ium bromide).
(1S,2S,4S,5R)-2-((R)-(Allyloxy)(quinolin-4-yl)methyl)-1-(anthracen-9-ylmethyl)-5-vinylquinuclidin-1-ium bromide (cas: 200132-54-3) belongs to quinuclidine derivatives. Quinuclidine exists in a number of naturally occurring compounds, biologically active agents, and privileged catalysts and ligands for asymmetric catalysis. Quinuclidine is an organic compound and a bicyclic amine and used as a catalyst and a chemical building block. It is a strong base with pKa of the conjugate acid of 19.5. It can be prepared by reduction of quinuclidone.Recommanded Product: (1S,2S,4S,5R)-2-((R)-(Allyloxy)(quinolin-4-yl)methyl)-1-(anthracen-9-ylmethyl)-5-vinylquinuclidin-1-ium bromide
Referemce:
Quinuclidine – Wikipedia,
Quinuclidine | C7H13N | ChemSpider